Welcome to the forum Stiv ( your chosen forum nickname in Danish its one of the words for being drunk, it also mean stiff in Danish )
I dont have any personal experience with this viofo model, it do sound as if the HDR which i always thought was the next big thing in dashcams, well not as good as i hoped for.
You should experiment yourself and see what is best for you, you can do this in one day or over several days, so turn on HDR, drive around the block, then turn off HDR and drive the same trip around the block, this will give you 2 videos to compare captured at the same light level.